What size tank & sump do you have and how long has it been established? How do you make sure there are ample pods? I would love to get a manderin in the future and want to make sure they're set by preparing now.

Well my tank has been gkoing for like 4 years but just added a fuge few months ago but I see them picking stuff out the cc day n night

The PODS in a Bag are ok, but are usually just one type. Indo Pacific Sea Farms (IPSF.org) and Inland Aquatics sell detrivore kits which consist of several different types. I recommend getting 3 or 4 different detrivore kits to get as much variety as you can.

I got my mandarin from my LFS and it's doing fine with live brine shrimp. When I went to the store I specifically asked what they eat, observed for a while, and made sure for myself that she really did eat what they claimed. She is currently in my QT and doing fine.
And she came with the regular $30 pice tag